51 lines
1.6 KiB
Bash
51 lines
1.6 KiB
Bash
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#!/usr/bin/env bash
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#shows traffic on the specified device
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while :; do
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function human_readable {
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VALUE=$1
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BIGGIFIERS=(B K M G)
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CURRENT_BIGGIFIER=0
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while [ $VALUE -gt 10000 ]; do
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VALUE=$(($VALUE / 1000))
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CURRENT_BIGGIFIER=$((CURRENT_BIGGIFIER + 1))
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done
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#echo "value: $VALUE"
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#echo "biggifier: ${BIGGIFIERS[$CURRENT_BIGGIFIER]}"
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echo "$VALUE${BIGGIFIERS[$CURRENT_BIGGIFIER]}"
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}
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###CHECKS####
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DEVICE=$1
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IS_GOOD=0
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for GOOD_DEVICE in $(grep ":" /proc/net/dev | awk '{print $1}' | sed s/:.*//); do
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if [ "$DEVICE" = "$GOOD_DEVICE" ]; then
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IS_GOOD=1
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break
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fi
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done
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if [ $IS_GOOD -eq 0 ]; then
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echo "Device $DEVICE not found. Should be one of these:"
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grep ":" /proc/net/dev | awk '{print $1}' | sed s/:.*//
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exit 1
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fi
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###REAL STUFF
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LINE=$(grep $1 /proc/net/dev | sed s/.*://)
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RECEIVED=$(echo $LINE | awk '{print $1}')
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TRANSMITTED=$(echo $LINE | awk '{print $9}')
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TOTAL=$(($RECEIVED + $TRANSMITTED))
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SLP=1
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sleep $SLP
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LINE=$(grep $1 /proc/net/dev | sed s/.*://)
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RECEIVED=$(echo $LINE | awk '{print $1}')
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TRANSMITTED=$(echo $LINE | awk '{print $9}')
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SPEED=$((($RECEIVED + $TRANSMITTED - $TOTAL) / $SLP))
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echo "Current speed: $(human_readable $SPEED)/s"
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done
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